Automatic winding apparatus for a strip of material

ABSTRACT

An automatic winding apparatus for a strip of material comprising a pair of driven under rollers adapted for supporting and driving a bobbin thereon, the under rollers being in spaced parallel arrangement and defining a gap therebetween. A strip of material is fed from one side of the pair of rollers onto the bobbin supported thereon. After the bobbin is full, it is displaced from the under rollers, while rotating onto a receiver disposed at the other side of the under rollers and a supply mechanism acts to supply an empty bobbin on the strip of material now passing over the under rollers to the full bobbin on the receiver. The strip of material is rendered adhesive in two spaced regions on opposite sides of the empty bobbin, and a cutter projects into the gap between the under rollers to cut the strip between the adhesive regions such that the end of the strip is wound on the full bobbin and is adhesively secured thereto while the beginning of the strip is adhesively secured to the empty bobbin.

Okubo et a1.

[451 Nov. 11,1975

[22] Filed:

[ AUTOMATIC WINDING APPARATUS FOR A STRIP OF MATERIAL [75] Inventors:Hideo Okubo; Michio Ishikawa,

both of Urawa. Japan [73] Assignee: Fuji Shiko Kabrishiki Kaisha,

Tokyo,Japan July 22, 1974 21 Appl. NO; 490,782

[30] Foreign Application Priority Data July 21, 1973 Japan 48-80810Sept. 12, 1973 Japan 48-10262] Sept. 18. 1973 Japan 48-108404 Feb. 12.1974 Japan 49-1626l Feb. 11. 1974 Japan ..l 49-20401 [52] US. Cl. 242/56R; 242/66 [51] Int. Cl. B6511 19/20; B65H 17/08 [58] Field of Search242/56 R, 66; 156/505. 156/506 [56] References Cited UNITED STATESPATENTS 3.841.578 10/1974 Dorfel .242/66 Primary Emminer-Edward J.McCarthy Attorney, Agent, or F irmWaters, Schwartz & Nissen 157] 1ABSTRACT An automatic winding apparatus for a strip of materialcomprising a pair of drivenunder rollers adapted for supporting anddriving a bobbin thereon. the under rollers being in spaced parallelarrangement and defining a gap therebetween. A strip of material is fedfrom one side of the pair of rollers onto the bobbin supported thereon.After the bobbin is full, it is displaced from the under rollers, whilerotating onto a receiver disposed at the other side of the under rollersand a supply mechanism acts to supply an empty bobbin on the strip ofmaterial now passing over the under rollers to the full bobbin on thereceiver. The strip of material is rendered adhesive in two spacedregions on opposite sides of the empty bobbin. and a cutter projectsinto the gap between the under rollers to cut the strip between theadhesive regions such that the end of the strip is wound on the fullbobbin and is adhesively secured theretowhile the beginning of the stripis adhesively secured to the empty bobbin.

l6Claims. 20 Drawing Figures U.S. Patent Nov. 11, 1975 Sheetlof 103,918,654

US. Patent Nov.11, 1975 Sheet20f 10 3,918,654

US. Patent Nov. 11 1975 Sheet3of 10 3,918,654

U.S. Patent Nov. 11, 1975 Sh6t4 0f 10 3,918,654

US. Patent Nov. 11, 1975 SheetS of 10 3,918,654

US. Patent Nov. 11 1975 Sheet60f 10 3,918,654

Sheet 7 of 10 Fig-15 US. Patent Nov. 11, 1975 Sheet 8 of 10 3,918,654

U.S. Patent Nov, 11', 1975 Sheet 9 of 10 3,918,654

U.S. Patent Nov. 11, 1975 Sheet 10 of 10 3,918,654

Fig- 18 AUTOMATIC WINDING APPARATUS FOR A STRIP OF MATERIAL FIELD OF THEINVENTION This invention relates to an apparatus for winding a strip ofmaterial such as a'strip of paper, film or the like or a narrow strip ofmaterial such as tape obtained from a slitter, and is more particularlydirected to an apparal PRIOR ART Such a winding apparatus is known inwhich two under rollers arranged to rotate in the same direction aremounted in parallel one with another, and above the middle of these twounder rollers a strip of material supplied from one side thereof iswound on a bobbin. In this known arrangement, when the bobbin is fullyloaded, the rotation thereof is stopped and the strip of material ismanually cut and sealed at its rear end on the full bobbin and then thebeginning end of the strip is fixed to a fresh bobbin. It takes a longtime to manually effect such operation.

SUMMARY OF THE INVENTION An object of this invention is to provide anapparatus wherein such sealing of the rear end and fixing of thebeginning end are automatically effected.

Accordingly, in a winding apparatus of the type in which a strip ofmaterial supplied from one side, is wound on a bobbin on two underrollers arranged to rotate in the same direction and mounted in parallelone with another, it is contemplated according to the invention that abobbin supply means is provided on one side of the twounder rollers anda rotating receiver section for receiving a full bobbin while rotatingisprovided on the other side thereof, additionally provided is an adhesiveapplication means for rendering adhesive the strip of material in tworegions on opposite sides of a fresh bobbin applied on the strip ofmaterial above the two under rollers the strip extending to the fullbobbin on the rotating receiver means, and a cutter means for cuttingthe strip of material intermediate the adhesive regions by projectingtowards the bobbin through a gap between the two under rollers.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a sectional view taken alongline 1 1 in FIG. 2 showing a first embodiment according to theinvention,

FIG. 2 is a sectional view taken along line 2 2 in FIG. 1,

FIG. 3 is an enlarged view of a portion of FIG. 1,

FIGS. 4 to 8 are diagrammatic views showing the op eration of the firstembodiment,

FIG. 9 is a sectional view taken along line 9 9 in FIG. 10 showing asecond embodiment according to the invention,

FIG. 10 is a sectional view taken along line 10 10 in FIG. 9,

FIG. 11 is a diagrammatic view of a portion of the second embodiment forexplaining the operation thereof, a Q l FIG. 12 is a sectional viewtaken along line 12 12 in FIG. 13 showing a third embodiment accordingto the invention,

FIG. 13 is a sectional view taken along line 13 13 in FIG. 12,

FIGS. 14(A)(B)(C) are enlarged views of portions thereof under operatingconditions,

FIG. 15 is a sectional view taken along line 15 15 in FIG. 16 showing afourth embodiment according to the invention,

FIG. 16 is a sectional view taken along line 16 16 in FIG. 15,

FIG. 17 is an enlarged view of a portion thereof, and

FIG. 18 is a sectional side view of another embodiment according to theinvention.

DETAILED DESCRIPTION Referring to FIGS. 1 to 3, numerals 1, 1' denotetwo driven under rollers mounted in parallel one with another, and abobbin supply means 2 for supplying a bobbin 3 is mounted on one side ofthe under rollers 1,

l while a rotating receiving section 4 for rotatably supporting a fullbobbin 3a is mounted on the other side thereof. Numeral 5 denotes apressing roller for pressing, from above, the bobbin 3 supplied betweenthe two under rollers 1, 1, and roller 5 is so arranged that a strip ofmaterial 6 supplied from the right side at a location under roller 1 maybe wound on the bobbin 3 in such a way that the bobbin 3 is driven inrotation by the under rollers 1, l and the pressing roller 5 under thecondition that the bobbin 3 is held by these three rollers 1, 1, 5.

Numeral 7 denotes a cutter means which comprises a cutting tool 8projecting towards the bobbin 3 through the gap between the underrollers l, l and a hydraulic cylinder 9 for raising and lowering thecutting tool 8. Numeral l0 denotes a hydraulic cylinder forreciproeating the cutting tool 8 in the lengthwise direction of thecutting edge thereof i.e., transversely of the strip of material so asto effect the cutting operation rapidly.

The bobbin supply means 2 comprises a pair of front and rear supply arms13, and these arms are provided with recesses 12 for receiving oppositeend portions of the bobbin 3 and clamp' means 14, for clamping said endportions. Each clamp means 14 comprises a hydraulic cylinder 16, apiston rod 15a projecting towards the front side of the recess 12 and anintegral clamp member 16.

Numeral l1 denotes an adhesive application means, which is mountedbetween the supply arms 13 and on both sides of the bobbin 3 held by theclamp means 14. The adhesive application means 11 comprises a pair ofcontainers l7 and a pair of applying members 18 extending therefrom, andas is conventional a liquid paste, with a sponge 19 or the likeimpregnated therewith, is disposed in each container 17. However, if thestip of material 6 is one to which a water soluble paste has beenpreviously applied, water is contained in the container.

The rotating receiving section 4 is constituted by a roller 20 free torotate which cooperates with under roller 1, so that the full bobbin 3aplaced between roller 20 and roller 1 continues to rotate for continuedwinding of the strip of material 6 on bobbin 3a. The roller 20 isrotatably mounted on a swingable arm 21, and the arrangement is suchthat when the arm is raised, a fresh bobbin 3 laterally pushes the fullbobbin 3a from one side by turning of the bobbin supply arms 13, and on3 the opposite side thereof the roller 20 receives the full bobbin whilerotating, and finally the full bobbin a is placed between the roller 20and the under roller 1.

Numeral 22 denotes a push-up roller for rolling the full bobbin 3aplaced on the rotating receiving section 4 to a conveyor 23 provided atthe left side thereof. Number 24 denotes a pressing roller providedbetween arm rods 26 projecting from a supporting shaft 25 of the bobbinsupply arms 13, and roller 24 serves to press the strip of material 6against the under roller 1' when the bobbin supply arms 13 are turnedfor supplying the bobbin 3.

The operation of the apparatus will next be explained with reference toFIGS. 4 to 8.

It is assumed that, as shown in FIG. 4, the strip of material 6 is beingwound on the bobbin 3 and a full bobbin 31: has been formed.

Hereupon, the swingable arms 21 are raised, as shown in dotted lines inFIG. 5 and at the same time the bobbin supply arms 13 of the bobbinsupply means 11 are turned, whereby the fresh bobbin 3 held thereonpushes the full bobbin 3a and the roller 20 on the swingable arms 21 ismoved downwardly while receiving the bobbin 3a, and the full bobbin 3ais brought into the position in which is is placed on the rotatingreceiving section 4 as shown in solid lines in FIG. 5. Here, the stripof material 6 extending from the full bobbin 3a is stretched over theunder rollers l, l. The bobbin supply arms 13 continue'to turn after thefull bobbin 3a has been pushed on the receiving section, and by'retracting the clamp members 16, caused by the operation of thehydraulic cylinders of the clamp means 14, the bobbin 3 is released ontothe strip of material 6 centrally positioned above the under rollers 1l, and at the same time the application members 18 of the adhesive means1 1 applies paste to the strip of material 6 at locations on oppositesides of the bobbin 3 as shown in FIG.

After completion of the application of the paste onto the strip ofmaterial, the bobbin supply arms 13 are immediately returned to theirinitial positions and, as shown in FIG. 7', the pressing roller 5 isthen lowered to press against the bobbin 3'while at the same time thecutting means 7 is operated. Thereupon, the cutting tool 8 is advancedtowards the bobbin 3 by the operation of the hydraulic cylinder 9 andthe cutting tool 8 is transversely reciprocated by the operation of thehydraulic cylinder 10. Thereby the strip of material 6 is cut at aposition between the locations where the adhesive has been applied bythe applicators.

Thus, as shown in FIG. 8, the rear end portion of the strip of material6 of the full bobbin 3a, to which adhesive has been applied, is rolledup and adhered against the full bobbin 3a by the rotation of the bobbin3a, and thus it becomes secured thereto.

At the same time, the adhesive on the supply side of the strip ofmaterial 6 serves to adhere the beginning portion of the strip ofmaterial 6 to the empty bobbin 3, and thus by the rotation of the bobbin3 the strip of material 6 is wound thereonto.

Thus, the bobbin 3 becomes the full bobbin 3a as shown in FIG. 4 bycontinuation of the winding, and by repeating the foregoing steps it isreplaced by a fresh bobbin 3.

In the foregoing operation, there is a time interval between the timewhen the bobbin supply arms 13 supply a fresh bobbin 3 and are retractedand the time when the pressing roller 5 is lowered to press against thebobbin 3, so that if the feeding speed of the strip of material 6 iscomparatively high, there is a danger that the portions with adhesiveare too advanced and, for instance, the strip of material 6 is cutupstream of the rear region which has been rendered adhesive.Accordingly, it is necessary either to stop the advance of the strip ofmaterial 6 or to lower the speed thereof.

In the embodiment shown inFIGS. 9 to 13, the adhesive application means11 similar to that shown in FIGS. 1 to 3 is located on both sides of thepressing roller 5 and is attached to piston rods 29a, of hydrauliccylinders 29, mounted on a connecting frame 28 to which is securedsupporting frames 27 on both sides of the pressing roller 5. If, in thecondition in which a fresh bobbin is supplied, the pressing roller 5 islowered to press against the bobbin 3, the hydraulic cylinders 29 areoperated and thereby the containers 17 of the adhesive means 11 arelowered, as shown in FIG. 11, and the applicator members 18 are broughtinto contact with the strip of material 6 to render the same adhesive inregions on both sides of the pressing roller 5. By then raising thecutting tool 8 immediately, it becomes possible for the strip ofmaterial 6 to be cut accurately at a predetermined cutting line betweenthe adhesive portions of the strip.

In this case, the bobbin supply means 2 may be constructed as shown inFIGS. 12 to 14 wherein the supporting frames 27 for the pressing roller5 are provided at their respective inside surfaces with guide grooves 31which can be in communication with bobbin supply channels 30 at theelevated position of the supporting frames 27 and are open at theirlower ends. Additionally each guide groove 31 is provided therein with'astopper 32 which serves to stop temporarily, below the pressing roller5, a bobbin 3 supplied from the bobbin supply channels 30. The stopper32 is arranged, for example, to be urged upwards by a spring 33 asillustrated. Thus, the bobbin 3 supplied into the guide grooves 31 fromthe bobbin supply channels 30 at the elevated position of the supportingframes 27 is supported below the pressing roller 5 by the stoppers 32and is lowered with the relative downward movement of the roller 5.Then, as shown in FIGS. 9 to 11, the strip of material 6 is renderedadhesive at regions on both sdies of the bobbin 3 and is cut along apredetermined cutting line between the adhesive regions. I-Iereupon, asshown in FIG. 14(A), the beginning end of the strip of material 6 isfixed to the bobbin 3 and the subsequent winding thereof can be started,and as the diameter thereof increases as shown in FIG. 14(8), the bobbin3 pushes the stoppers 32 to pivot them against the action of springs 33and by such a relative lowering of the bobbin 3 with increase of thediameter thereof, the stoppers 32 finally release the bobbin and thenare returned to their initial positions by springs 33. Thereafter, thewinding of the strip of material 6 is carried out independently of thestoppers 32. The stopper 32 is not limited to that illustrated and maybe of such a type that it is retracted by the pushing force caused bythe lowering of the bobbin 3.

The cutting tool 8 of the cutter means 7 is comparatively thin.Accordingly, when it cuts the strip of material 6 during the travel ofthe latter, the tool is liable to be bent in the travel direction. Whensuch bending is repeated, the cutting tool 8 becomes fatigued and thetime for replacement thereof is shortened.

FIGS. 15 to 18 shown an embodiment in which such fatigue of the cuttingtool is substantially eliminated. As

ting tool 8 is placed within a groove 35 provided in the upper surfaceof a tool supporting frame 34 and having a width larger than thethickness of the tool 6 so that the tool 8 is tiltable forwards andrearwards. The cutting tool 8 is urged by a spring 36 in a directionopposite to the advancing direction of the strip of material 6. Thus,even if the tool supporting frame 34 is elevated and the cutting tool 8strikes against the bobbin 3, as shown in solid lines in FIG. 17, due tothe rotation of the bobbin 3, the cutting tool 8 is inclined in theadvancing direction of the strip of material 6 while compressing thespring 36, and during this period the cutting of the strip of material 6is completed.

As seen in FIGS. and 16, the driving means for the cutting tool 8comprises pair of cams 37, 37' provided below the tool supporting frame34, and bevel gears 41, 41' attached to respective rotating shafts 40,40' connected to one another through an axle shaft 38 and universaljoints 39, 39' on opposite ends thereof. The gears 41, 41 are in meshwith respective bevel gears 42, 42 mounted on respective shafts of thecams 37, 37, and a chain gear 43 attached to the external end of arotatable shaft 40' is connected to an output gear 46 of a genevamechanism 45 through a chain 44.

In this embodiment, the adhesive applicator means 11 comprises a pasteapplying roll 47, which is formed with two ridges for applying adhesive,the space between the ridges defining a transversely extendingpredetermined cutting portion. The adhesive means further comprises apaste transfer roll 48, a paste container 49, and a chain gear 50 ismounted on a shaft of the paste applying roll 47 and is connected toanother output gear 52 of the foregoing geneva mechanism 45 through achain 51.

The geneva mechanism 45 is so constructed that when the strip ofmaterial 6 wound on the bobbin 3 reaches a predetermined length, it isdriven by an electric motor (not shown) so that first the paste applyingroll 47 is rotated to apply paste contained in the paste container 49onto the strip of material 6 to form two adhesive strips thereon, andthen when the predeter; mined cutting portion therebetween comes to facethe cutting tool 8, the pair of cams 37, 37' are rotated to elevate thecutting tool 8.

Numeral 53 denotes a push out roller for transferring the full bobbin 30from above the under rollers l, l' to the left, and the roller 53 isattached between a pair of arms 54 swingably attached to the shaft ofthe under roller 1' such that when the bobbin 3 becomes the full bobbin3a, the arms 54 are tilted to push the full bobbin 3a from the positionabove the under rollers 1, 1'. At this time, the roller of the rotatingreceiving-section 4 receives the full bobbin 3a and thereby the bobbin3a is received by the rotating receiving section 4 while rotating. If itis so arranged that the rollers 20, 53 are forcibly rotated at the samespeed as the running speed of the strip of material 6, the full bobbin3a can be prevented from being wrinkled.

The cutting edge of the cutting tool 8 may be formed with an indentationas shown in FIGS. 16 and 18. Additionally, as the means forreciprocating the cutting tool 8 in its lengthwise direction, there maybe employed a cam 56 turned by an electric motor 55 as shown in FIGS. 15and 16, or reciprocation may be effected by an electro-magnetic vibrator57 as shown in FIG. 18.

Referring to FIGS. 12 and 15, numeral 58 denotes a feeding member for abobbin 3 provided in the bobbin 6 supply channel 30, and the member 58serves to feed a bobbin one by one by the reciprocal movement of thismember.

. In connection with the above, the supporting frames 27, for thepressing roller 5 is: mounted on the machine frame 59 so as to beslidable upwards and downwards, and a means (not shown) serves formoving these frames 27, upwards and downwards and for applying pressureand for pushing the bobbin 3 against the roll of the strip of material 6which is being wound thereon. It is preferable that the pressing; roller5 be rotated in synchronous relation with the under rollers 1, 1'. Inthe embodiments of FIGS. 1 to 8, FIGS. 15 to FIG. 17, and FIG. 18, thepressing roller may be omitted.

In this case, frames corresponding to the supporting frames 27, for thepressing roller 5 are provided with guide grooves which are inengagement with the bobbin 3 and the foregoing upward and downwardmoving means and the pressure applying means are provided on the frames.

Thus, according to this invention, in an apparatus of the type in whicha strip of material supplied from one side is wound on a bobbin abovetwo under rollers arranged in parallel one with another and arranged torotate in the same direction, a rotating receiving section for rotatablyreceiving a full bobbin is provided on the other side of the underrollers, and a bobbin supply means for supplying an empty bobbin ontothe strip of material leading to the full bobbin, said strip extendingover the middle of the two under rollers, an adhesive applicator meansbeing provided for rendering the strip of material adhesive in regionson both sides of the bobbin, and a cutter means for projecting through agap between the two under rollers for cutting the strip of material atan intermediate position between the adhesive regions, so thatautomatically the strip of material is cut and sealed and the beginningend thereof is adhered to the empty bobbin.

What is claimed is:

1. An automatic winding apparatus for a strip of material comprising apair of driven under rollers adapted for supporting and driving a bobbinthereon, said under rollers being in spaced parallel arrangement anddefining a gap therebetween, feed means for feeding a strip of materialfrom one side of said pair of under rollers onto the bobbin supportedthereon and on which the strip of material is wound, means for removinga full bobbin from said under rollers after said strip has been wound onsaid bobbin to a predetermined extent, receiver means disposed on theside of the pair of under rollers opposite said feed means for receivingthe full bobbin from said under rollers after removal therefrom and forcontinuing the drive of the full bobbin, said strip of material beingfed from the feed means over the under rollers and the gap therebetweento the still driven full bobbin, means for supplying an empty bobbin onthe now vacant under rollers above said strip, means for rendering saidstrip of material adhesive in two spaced regions on opposite sides ofsaid empty bobbin, and cutter means for projecting in said gap to cutsaid strip between said adhesive regions such that the end of the stripis wound on said full bobbin and is adhesively secured thereto while thebeginning of the strip is adhesively secured to the empty bobbin, saidcutter means comprising a frame mounted beneath said under rollers, anda cutting tool carried by said frame and being raisable to a positionwithin said gap to cut the strip passing on said under rollers.

2. An automatic winding apparatus as claimed i claim 1, wherein said andcutting tool is mounted in a groove provided in said frame so that thetool is tiltable forwards and rearwards. and resilient means urging thecutting tool in a direction reverse to the advancing direction of thestrip of material. 1

3. An apparatus as claimed in claim 2, comprising means forreciprocating the cutting tool in transverse direction of the strip ofmaterial.

4. An apparatus as claimed in claim 3, wherein said cutting tool has anedge provided with an indentation.

5. An apparatus as claimed in claim 1, wherein said means for supplyingan empty bobbin to said under rollers comprises a pair of swingable armsdisposed laterally of one under roller, clamp means on said arms fordetachably clamping an empty bobbin supplied from one side thereof, andmeans for turning the swingable arms and operating the clamp means tosupply the empty bobbin onto said under rollers.

6. An apparatus as claimed in claim 5 wherein the adhesive renderingmeans comprises containers with applicator members projecting therefrommounted on both sides of a bobbin held by said clamp means and arrangedso that at the same time as the empty bobbin is supplied to the underrollers the strip of material is rendered adhesive at said regions onboth sides of the bobbin by said applicator members.

7. An apparatus as claimed in claim 5 wherein the means for removing afull bobbin is constituted by said inclined arms and said clamping meanssuch that by inclining said arms with their clamping means the fullbobbin on the under rollers is transferred to the receiver means by theempty bobbin held on the arms by said clamp means.

8. An apparatus as claimed in claim 1 comprising a pressing rollermounted above said under rollers for pressing downwards the bobbinplaced on the under rollers, the adhesive rendering means comprisingcontainers with applicator members projecting downwards therefrommounted on both sides of said pressing roller so as to be movableupwards and downwards and arranged so that on pushing of the bobbin bythe pressing roller the containers are further moved downwards and theregions of the strip of material on both sides of the bobbin is renderedadhesive.

9. An apparatus as claimed in claim 8 wherein the means for supplying anempty bobbin comprises supporting frames on both sides of the pressingroller, said frames having inner surfaces with guide grooves for guidingopposite end portions of a bobbin supplied 8 thereto, and stop means forsupporting the bobbin below the pressing roller and including means forreleasing the bobbin when the winding diameter of the bobbin isincreased to a predetermined value.

10. An apparatus as claimed in claim 9 wherein said stop means comprisespivotal stoppers, springs urging said stoppers upwards, so that an emptybobbin is held by the stoppers and by lowering movement of the bobbinwith increase of the winding diameter, the stoppers are inclined againstthe action of said springs, and by further increase of the windingdiameter the bobbin is released therefrom.

11. An apparatus as claimed in claim 1, wherein the adhesive renderingmeans comprises a roller having two spaced ridges for forming two stripsof adhesive portions on said regions on both sides of the strip ofmaterial, said roller being mounted upstream of the location where thestrip of material is wound on the bobbin.

12. An apparatus as claimed in claim 1 wherein said receiver meanscomprises a further roller, and a pair of yieldable, swingable armssupporting said further roller on the other side of the under rollersand arranged so that by raising the swingable arms the full bobbin whichis being transferred from the under rollers causes the arms to lowerwhile the bobbin remains in contact with said further roller all whilethe full bobbin is being rotated by said further roller and the adjacentunder rollers.

13. An apparatus as claimed in claim 12 comprising means for drivingsaid further roller at the same speed as the travel speed of the stripof material.

14. An apparatus as claimed in claim 13 wherein said means for removinga full bobbin further comprises a push-out roller so positioned that thefull bobbin is held between the further roller supported on saidswingable arms and said push-out roller, and by the cooperation of theserollers the full bobbin is transferred, while being rotated, to saidreceiver means.

15. An apparatus as claimed in claim 1 comprising means for reciprocallymoving said cutter means vertically with respect to said strip between araised operative position in which the cutting tool protrudes in saidgap and cuts said strip, and a lowered inoperative position.

16. An apparatus as claimed in claim 15 comprising axles supporting saidunder rollers in said parallel arrangement in fixed relation.

1. An automatic winding apparatus for a strip of material comprising apair of driven under rollers adapted for supporting and driving a bobbinthereon, said under rollers being in spaced parallel arrangement anddefining a gap therebetween, feed means for feeding a strip of materialfrom one side of said pair of under rollers onto the bobbin supportedthereon and on which the strip of material is wound, means for removinga full bobbin from said under rollers after said strip has been wound onsaid bobbin to a predetermined extent, receiver means disposed on theside of the pair of under rollers opposite said feed means for receivingthe full bobbin from said under rollers after removal therefrom and forcontinuing the drive of the full bobbin, said strip of material beingfed from the feed means over the under rollers and the gap therebetweento the still driven full bobbin, means for supplying an empty bobbin onthe now vacant under rollers above said strip, means for rendering saidstrip of material adhesive in two spaced regions on opposite sides ofsaid empty bobbin, and cutter means for projecting in said gap to cutsaid strip between said adhesive regions such that the end of the stripis wound on said full bobbin and is adhesively secured thereto while thebeginning of the strip is adhesively secured to the empty bobbin, saidcutter means comprising a frame mounted beneath said under rollers, anda cutting tool carried by said frame and being raisable to a positionwithin said gap to cut the strip passing on said under rollers.
 2. Anautomatic winding apparatus as claimed in claim 1, wherein said andcutting tool is mounted in a groove provided in said frame so that thetool is tiltable forwards and rearwards, and resilient means urging thecutting tool in a direction reverse to the advancing direction of thestrip of material.
 3. An apparatus as claimed in claim 2, comprisingmeans for reciprocating the cutting tool in transverse direction of thestrip of material.
 4. An apparatus as claimed in claim 3, wherein saidcutting tool has an edge provided with an indentation.
 5. An apparatusas claimed in claim 1, wherein said means for supplying an empty bobbinto said under rollers comprises a pair of swingable arms disposedlaterally of one under roller, clamp means on said arms for detachablyclamping an empty bobbin supplied from one side thereof, and means forturning the swingable arms and operating the clamp means to supply theempty bobbin onto said under rollers.
 6. An apparatus as claimed inclaim 5 wherein the adhesive rendering means comprises containers withapplicator members projecting therefrom mounted on both sides of abobbin held by said clamp means and arranged so that at the same time asthe empty bobbin is supplied to the under rollers the strip of materialis rendered adhesive at said regions on both sides of the bobbin by saidapplicator members.
 7. An apparatus as claimed in claim 5 wherein themeans for removing a full bobbin is constituted by said inclined armsand said clamping means such that by inclining said arms with theirclamping means the full bobbin on the under rolLers is transferred tothe receiver means by the empty bobbin held on the arms by said clampmeans.
 8. An apparatus as claimed in claim 1 comprising a pressingroller mounted above said under rollers for pressing downwards thebobbin placed on the under rollers, the adhesive rendering meanscomprising containers with applicator members projecting downwardstherefrom mounted on both sides of said pressing roller so as to bemovable upwards and downwards and arranged so that on pushing of thebobbin by the pressing roller the containers are further moved downwardsand the regions of the strip of material on both sides of the bobbin isrendered adhesive.
 9. An apparatus as claimed in claim 8 wherein themeans for supplying an empty bobbin comprises supporting frames on bothsides of the pressing roller, said frames having inner surfaces withguide grooves for guiding opposite end portions of a bobbin suppliedthereto, and stop means for supporting the bobbin below the pressingroller and including means for releasing the bobbin when the windingdiameter of the bobbin is increased to a predetermined value.
 10. Anapparatus as claimed in claim 9 wherein said stop means comprisespivotal stoppers, springs urging said stoppers upwards, so that an emptybobbin is held by the stoppers and by lowering movement of the bobbinwith increase of the winding diameter, the stoppers are inclined againstthe action of said springs, and by further increase of the windingdiameter the bobbin is released therefrom.
 11. An apparatus as claimedin claim 1, wherein the adhesive rendering means comprises a rollerhaving two spaced ridges for forming two strips of adhesive portions onsaid regions on both sides of the strip of material, said roller beingmounted upstream of the location where the strip of material is wound onthe bobbin.
 12. An apparatus as claimed in claim 1 wherein said receivermeans comprises a further roller, and a pair of yieldable, swingablearms supporting said further roller on the other side of the underrollers and arranged so that by raising the swingable arms the fullbobbin which is being transferred from the under rollers causes the armsto lower while the bobbin remains in contact with said further rollerall while the full bobbin is being rotated by said further roller andthe adjacent under rollers.
 13. An apparatus as claimed in claim 12comprising means for driving said further roller at the same speed asthe travel speed of the strip of material.
 14. An apparatus as claimedin claim 13 wherein said means for removing a full bobbin furthercomprises a push-out roller so positioned that the full bobbin is heldbetween the further roller supported on said swingable arms and saidpush-out roller, and by the cooperation of these rollers the full bobbinis transferred, while being rotated, to said receiver means.
 15. Anapparatus as claimed in claim 1 comprising means for reciprocally movingsaid cutter means vertically with respect to said strip between a raisedoperative position in which the cutting tool protrudes in said gap andcuts said strip, and a lowered inoperative position.
 16. An apparatus asclaimed in claim 15 comprising axles supporting said under rollers insaid parallel arrangement in fixed relation.